Creosote
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Creosote is a category of carbonaceous chemicals formed by the distillation of various tars and pyrolysis of plant-derived material, such as wood, or fossil fuel. They are typically used as preservati
Wood railroad ties before (right) and after (left) infusion with creosote, being transported by railcar at a facility of the Santa Fe Railroad, in Albuquerque, New Mexico, in March 1943. This U.S. wartime governmental photo reports that "The steaming black ties in the [left of photo]... have just come from the retort where they have been infused with creosote for eight hours." Ties are "made of pine and fir... seasoned for eight months" [as seen in the untreated railcar load at right].
1727 portrait of George Berkeley by John Smibert
Wooden street pavers in Chicago
Broken creosote piling exposed by weathering
Pyrolysis
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Pyrolysis is a process involving the separation of covalent bonds in organic matter by thermal decomposition within an inert environment without oxygen.
Creosote
…Creosote is a category of carbonaceous chemicals formed by the distillation of various tars and pyrolysis of plant-derived material, such as wood, or fossil fuel. They are typically used as preservatives or antiseptics. Some creosote types were used…
Burning pieces of wood, showing various stages of pyrolysis, followed by oxidative combustion
Oak charcoal
Caramelized onions are slightly pyrolyzed.
This pizza is pyrolyzed, almost completely carbonized.